Show-case light.



5. F. DGYLE, III. KI Ni. AVILLAR,

SHOW CASE LIGHT.

APPLICATION FILED IAN. I3. 1917.

. 9g@ gQQJO Patented Sept.v 25, 1917.

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JGHN F. DOYLE, JR., 0F GARDEN CITY, AND MANUEL D. AVILLAR,'0F NEW YORK,N. Y.

SHOW-CASE LIGHT.

Specication of Letters Patent.

Patented Sept. 25, 11.917.

Application led January 13, 1917. Serial No. 142,126.

To all whom t may concern.-

lBe it known that we, JOHN F. DOYLE, Jr., and MANUEL D. AviLLAR, bothcitizens of the United States, and residents, respectively, of GardenCity, in the county of Nassau and State of New York, and New York city,in the county and State of New York, have invented certain new anduseful Improvements in Show-Case L ights, of which the following is aspeciiication.

This invention relates to a show case light of novel construction, whichis so constituted than an even temperature between the interior of theshow case and the store may be maintained, so that any sweating ortarnishing of the goods displayed within the case may be effectivelyprevented.

yIn the accompanying drawing:

Figure 1, is a vertical longitudinal section, partly in elevation of ashow case light embodying our invention;

Fig. 2, a cross section on line 2-2 Fig. 1;

Fig. 3, a cross section on line 3-3 Fig. 1, and

Fig. 4, a diagram showing the connection of the light with thecompressed air tank.

Across preferably the back of a show case 1, extends a glass tube ortransparent container 2, the rear half of which is provided with aninner reiiecting surface 3. Tube 2, is incased within a shield 4preferably made of fiber, and which is' open at its front so as to hereexpose the tube. This shield may carry a number of hooks 5, by means ofwhich the device may be atlixed to a suitable support, to preventsagging. Within tube 2, there is centered an electric light bulb 6, theouter' diameter of which is considerably less than the inner diameter oftube 2, so as to form an annular air space 7 therebetween, whichcompletely surrounds the bulb. The means for centering the bulb withinthe tube, consist preferably of a number of corrugated or open workrings 8, that encircle the bulb but do not obstruct the passage of airalong space 7. Into one end of tube 2, enters an air inlet nozzle 9which iits into a corresponding opening in the side of the show case andfaces lamp 6. This nozzle is adapted to receive a'charge of compressedair, from an air pump or compressor 10, mounted in the store, and

connected to a compressed air tank 11, that is in turn connected tonozzle 9 by a pipe 12, furnished with a regulating valve 13. Into theother end of tube 2, enters an annular air out-let nozzle 14, that fitsinto an opening in the opposite side of the show case. Vithin thecentral eye of nozzle 14, is accommodated the lamp socket 15, theleading in wires 16 passing outwardly through an insulated aperture 17of the nozzle. Around the cent-ral opening of nozzle 14, are provided aplurality of ducts or por-ts 18, through which the air may leave space7, to be returned to the store by means of a nipple 19, with whichnozzle l-L is furnished.

. A pair of thermometers 20 and 21 mounted on the outside and inside ofthe show case respectively, permit a comparison of the temperaturesbetween the store and the interior of the show case.

In use, the compressed air from tank 11 will by nozzle 9, be deliveredto air space 7, and flow around lamp 6 to be eventually dischargedthrough nozzle 14. This How of air is regulated by means of valve 13which should be so set, that the temperatures within and without thecase are equalized. In this way the heat emitted from the bulb isneutralized, and the objectionable sweating or tarnishing of the goods,due to the difference in temperatures, and which frequently proves to beextremely annoying, is effectively overcome.

IVe claim:

1. A show case having a pair of apertured sides combined with a pair ofnozzles fitted into said sides, a glass tube engaging the nozzles withinthe show case, a Shield partly encompassing said tube, a light bulbmounted within the tube, and means for sending a current of air throughthe tube.

2. A show case light comprising a glass tube, an electric light bulbmounted therein, means for admitting compressed air into one end of saidtube, and an air outlet nozzle at the other end of the tube, said nozzlebeing provided with a central opening receiving the lamp socket, andwith a plurality of 4surrounding air outlet ports.

KUHN F. DYLE, JR. MANUEL D. AVILLAR.

